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71-00-00 Oct 95 - FlyingWay · PDF file cfm international CFM56-3 TRAINING MANUAL EFFECTIVITY CFMI PROPRIETARY INFORMATION Page 2 ALL 71-00-00 Oct 95 GROUND SAFETY PRECAUTIONS Overview

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  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 1 Oct 95ALL 71-00-00

    GENERAL ENGINE DATA Objectives: At the completion of this section a student should be able to: ....given a list identify the safety precautions associated with the CFM56-3/3B/3C engine (1.A.x). ....given a specific model and a list identify the dimensions and weights of the CFM56-3/3B/3C engine (1.A.x). ....given a specific model and a list identify the ratings and applications of the CFM56-3/3B/3C engine (1.A.x). ....given a list recall the engine transportation requirements for a CFM56-3/3B/3C engine (1.A.x). ....given a list recall the types of on-condition monitoring used with the CFM56-3/3B/3C engine (1.A.x). ....given a list recall the maintenance strategy of the CFM56-3/3B/3C engine (1.A.x). ....given a list select the purpose of on-condition monitoring for the CFM56-3/3B/3C engine (1.B.x). ....given a list select the purpose of the maintenance strategy of the CFM56-3/3B/3C engine (1.B.x).

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 2 Oct 95ALL 71-00-00

    GROUND SAFETY PRECAUTIONS

    Overview (1.A.a) The operation of jet power plants is dangerous. While the engine operates, these dangerous conditions can occur:

    - There is a very strong suction at the front of the engine that can pull persons and unwanted materials into the air inlet.

    - Very hot, high speed gases go rearward from the turbine exhaust nozzle.

    - The fan exhaust at high thrust has very high speed.

    - When the Thrust Reverser (T/R) is extended, the fan exhaust goes forward while the turbine exhaust goes rearward.

    - When exposed to engine noise for extended periods of time hearing loss can occur.

    - High voltage output from the ignition system can be fatal if not properly handled.

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 3 Oct 95ALL 71-00-00

    THE HAZARDS OF AIRCRAFT MAINTENANCE

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 4 Oct 95ALL 71-00-00

    When an engine is started, fuel that has collected in the turbine exhaust sleeve can ignite. Long flames are blown out of the exhaust nozzle. For this reason all flammable materials must be kept clear of the exhaust nozzle.

    There are contamination and bad gases which were pulled into the engine by suction. There are also gases from the fuel that has burned or fuel which has not burned. These gases in the exhaust are dangerous to you. Tests have shown that the amount of carbon monoxide in the exhaust is small, but there are other gases in the exhaust that smell bad and can cause injury or irritation to your eyes and lungs. These gases will usually cause a watering or burning sensation to your eyes. Less noticeable, but more important, is the respiratory irritation. When working near running aircraft you must stay away from small spaces where these gases can collect.

    GROUND SAFETY PRECAUTIONS

    Inlet and Exhaust Safety Precautions (1.A.a) Persons positioned near the power plant during power plant operation must be aware of the following inlet/ exhaust hazard areas:

    When the engine operates, it makes a low air pressure area in the inlet. This low pressure area causes a large quantity of air to move from the forward side of the inlet cowl and go into the engine The air which is near the inlet moves at a much higher velocity than air which is farther from the inlet. The quantity of the engine suction does not increase slowly and continuously when you go near the inlet. The suction is small until you get near the inlet, where the suction increases suddenly. The engine suction can pull small objects into the engine easier than it can pull large objects.

    Aft of the inlet cowl lip the hazard area extends completely around the outer diameter and to the forward end of the power plant.

    When the engine operates, a large quantity of exhaust comes from the aft end of the engine. The exhaust is hot and moves at high speed. The exhaust temperature near the engine is sufficient to melt bituminous (asphalt) pavement engine operation on concrete pavement is therefore recommended.

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 5 Oct 95ALL 71-00-00

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  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 6 Oct 95ALL 71-00-00

    GROUND SAFETY PRECAUTIONS

    Inlet and Exhaust Safety Precautions Before you operate the engine, do these steps:

    - Make sure there are no tools, unwanted materials or objects in the air inlet.

    - Make sure the area 40 feet to each side and forward of the power plant is clean.

    - Make sure the ground which is forward of the engine is strong and solid.

    - Make sure the suction of the engine will not pull the unwanted material on the ground into the engine.

    - Make sure that persons with loose objects (such as hats, eyeglasses, loose clothing or rags) do not go into this area.

    - When the engine is operated, use an engine inlet guard. This will prevent persons from being pulled into the inlet because of air suction from the engine.

    It is recommended that ground persons stay outside of the inlet hazard area for at least 30 seconds after the fuel cutoff signal (start lever placed in CUTOFF position) from the flight compartment.

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 7 Oct 95ALL 71-00-00

    PROTECT AGAINST INLET HAZARDS

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 8 Oct 95ALL 71-00-00

    GROUND SAFETY PRECAUTIONS

    Inlet and Exhaust Safety Precautions At idle power (forward thrust), the inlet hazard area starts four feet aft of the inlet cowl lip and extends to a distance of approximately 9 feet forward. The exhaust hazard area extends aft to a distance of approximately 100 feet from the tail of the B737 aircraft.

    - If the surface wind is more than 25 knots, increase the distance of the inlet hazard area by 20%.

    - If the ramp surfaces are wet or frozen, make the ramp clean to prevent injury to persons.

    - After the engine is shut down, let the engine spool down before the engine is approached.

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 9 Oct 95ALL 71-00-00

    100 FEET (30.5 METERS)

    WARNING: IF SURFACE WIND IS REPORTED GREATER THAN 25 KNOTS, INCREASE DISTANCE OF INLET BOUNDARY BY 20%. IF RAMP SURFACES ARE SLIPPERY, ADDITIONAL PRECAUTIONS SUCH AS CLEANING THE RAMP WILL BE NECESSARY TO PROVIDE PERSONNEL SAFETY.

    GROUND PERSONNEL MUST STAND CLEAR OF THESE HAZARD ZONES AND MAINTAIN COMMUNICATION WITH FLIGHT COMPARTMENT PERSONNEL DURING ENGINE RUNNING.

    ENGINE INLET AND EXHAUST HAZARD AREAS - IDLE POWER (FORWARD THRUST)

    R = 9 FEET (2.7 METERS)

    INLET COWL

    LIP

    RIGHT ENGINE

    4 FEET (1.2 METERS)

    LEFT ENGINE

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 10 Oct 95ALL 71-00-00

    GROUND SAFETY PRECAUTIONS

    Inlet and Exhaust Safety Precautions At breakaway power (forward thrust), the inlet hazard area starts five feet aft of the inlet cowl lip and extends to a distance of approximately 13 feet forward. The exhaust hazard area extends aft to a distance of approximately 510 feet from the tail of the B737 aircraft.

    - If the surface wind is more than 25 knots, increase the distance of the inlet hazard area by 20%.

    - If the ramp surfaces are wet or frozen, make the ramp clean to prevent injury to persons.

    - After the engine is shut down, let the engine spool down before the engine is approached.

    At high power, the fan and turbine exhaust can blow loose dirt, stones, sand and other unwanted materials at a distance of 300 feet. Park at an area where injury to persons or damage to equipment or other airplanes can be prevented. When available use a blast fence to deflect the thrust if the engines are operated without sufficient space to decrease the fan and turbine exhaust thrust to zero.

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 11 Oct 95ALL 71-00-00

    ENGINE INLET AND EXHAUST HAZARD AREAS - BREAKAWAY POWER (FORWARD THRUST)

    R = 13 FEET (4 METERS)

    5 FEET (1.5 METERS)

    INLET COWL

    LIP

    WARNING: IF SURFACE WIND IS REPORTED GREATER THAN 25 KNOTS, INCREASE DISTANCE OF INLET BOUNDARY BY 20%. IF RAMP SURFACES ARE SLIPPERY, ADDITIONAL PRECAUTIONS SUCH AS CLEANING THE RAMP WILL BE NECESSARY TO PROVIDE PERSONNEL SAFETY.

    GROUND PERSONNEL MUST STAND CLEAR OF THESE HAZARD ZONES AND MAINTAIN COMMUNICATION WITH FLIGHT COMPARTMENT PERSONNEL DURING ENGINE RUNNING.

    510 FEET (155 METERS)

  • cfm international CFM56-3 TRAINING MANUAL

    EFFECTIVITY

    CFMI PROPRIETARY INFORMATION

    Page 12 Oct 95ALL 71-00-00

    GROUND SAFETY PRECAUTIONS

    Inlet and Exhaust Safety Precautions At takeoff power (forward thrust), the inlet hazard area starts five feet aft of the inlet cowl lip and extends t